Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 27 - Jul 2
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Description
TP-Link SM321A 1000Base-BX WDM Bi-Directional SFP Module, LC connector, TX:1550nm/RX:1310nm, single-mode, 10kmUp to 20 km transmission distance with 9 125 m SMF (Single Mode Fiber) Bidirectional WDM communication on a single fiber Compatible with Small Form Pluggable Multi Source Agreement (SFP MSA) Supports Digital Diagnostic Monitoring (DDM) Hot swappable module design Work with TL SM321B as a pair Brand TP LINK Product Type Ink cartridge SKU SM321A OEM Code SM321A Barcode 1. 21E+12
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
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Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 701 reviews
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Product Reviews
★★★★★ 5
Very practical for the price.
Color: Black
Very practical for the price.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Good for a quick backdrop
This works well for what I needed – a simple background for my kids’ online school. It’s lightweight and very easy to put together, and it stands up fine without needing to mount anything.
The color is listed as black, but it’s more of a dark gray in person. Not a huge deal, just something to be aware of. It’s not super heavy duty, but it does the job for privacy and as a video backdrop.
Overall, a good, portable divider that’s quick to set up and works well for light use.
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Reviewed in the United States on February 21, 2026
★★★★★ 5
Essay to assemble
Color: Grey
Very nice. Did the job the way I wanted.
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Reviewed in the United States on April 28, 2026
★★★★★ 2
Low budget option
Color: Grey
Budget low quality if thats what youre looking for
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Reviewed in the United States on April 27, 2026
★★★★★ 3
Hard to assemble
Color: Grey
This is extremely hard to put together, but once its together it is pretty good. You will need to secure it to something. It falls over.
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Reviewed in the United States on March 6, 2026
